Table 3.
Logistic Regression Predicting Cotinine-Verified Abstinence at 26-week follow-up
| Characteristics | OR (95% CI) | p value |
| Age, each year | 0.973 (0.948–0.997) | .031 |
| Gender | .035 | |
| Male | Reference | |
| Female | 0.593 (0.363–0.968) | |
| Drug | .134 | |
| Placebo | Reference | |
| Gum | 1.44 (0.893–2.332) | |
| Counseling | <.001 | |
| Motivational interviewing | Reference | |
| Health education | 2.581 (1.562–4.264) | |
| Current smoking | .029 | |
| Now smoke about the same or more CPD | Reference | |
| Now smoke less CPD | 1.772 (1.062–2.957) |
Note. Other variable in model but not statistically significant in the final model include age of regular smoking, marital status, income, cigarettes per day smoked, quit attempts in past year, and time to first cigarette of the day.